PartsTable
Technical Data Sheet
1582AS158-2 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

GUIDE,ENGINE POPPET VALVE TAPPET. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 0.812 INCHES NOMINAL FIRST END IN, connection_type: UNTHREADED EXTERNAL HOSE SECOND END, connection_style: BARBED OR BEADED (HOSE) SECOND END, operating_pressure: 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-226-3297, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1582AS158-2
NSN: 4730-01-226-3297
FSC: 4730
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length0.812 INCHES NOMINAL FIRST END IN
connection_typeUNTHREADED EXTERNAL HOSE SECOND END
connection_styleBARBED OR BEADED (HOSE) SECOND END
operating_pressure100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.375 INCHES FIRST END IN
maximum_operating_temp75.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_series_designatorNPT FIRST END
nominal_inside_diameter_hose_accommodated0.375 INCHES SECOND END IN
NSN4730-01-226-3297
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1582AS158-2 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST END
MAXIMUM OPERATING TEMP: 75.0 FAHRENHEIT SINGLE RESPONSE DEGF
LEG LENGTH: 0.812 INCHES NOMINAL FIRST END IN
CONNECTION STYLE: PLAIN (PIPE) FIRST END
MATERIAL: COPPER ALLOY OVERALL
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.375 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
CONNECTION TYPEUNTHREADED EXTERNAL HOSE SECOND END
MAXIMUM OPERATING TEMP75.0 FAHRENHEIT SINGLE RESPONSE DEGF
LEG LENGTH0.812 INCHES NOMINAL FIRST END IN
LEG LENGTH0.938 INCHES NOMINAL SECOND END IN
CONNECTION STYLEPLAIN (PIPE) FIRST END
MATERIALCOPPER ALLOY OVERALL
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.375 INCHES SECOND END IN
NOMINAL THREAD SIZE0.375 INCHES FIRST END IN
CONNECTION STYLEBARBED OR BEADED (HOSE) SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
22986Interchangeable
interchangeable cross-reference
interchangeable
26889Interchangeable
interchangeable cross-reference
interchangeable
ST22986Interchangeable
interchangeable cross-reference
interchangeable
FIG 103 3/8INInterchangeable
interchangeable cross-reference
interchangeable
FIG 102-3/8Interchangeable
interchangeable cross-reference
interchangeable
17561Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1582AS158-2?
1582AS158-2 is a GUIDE,ENGINE POPPET VALVE TAPPET.
What parts can replace 1582AS158-2?
There are 8 known substitutes for 1582AS158-2: 22986, 26889, ST22986 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1582AS158-2?
1582AS158-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-226-3297. This indicates validated use in U.S. government and defense supply chains.
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